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-rw-r--r--src/libcore/nonzero.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libcore/nonzero.rs b/src/libcore/nonzero.rs
index 601e1b192a9..7c8be79d075 100644
--- a/src/libcore/nonzero.rs
+++ b/src/libcore/nonzero.rs
@@ -32,7 +32,7 @@ unsafe impl Zeroable for u64 {}
 /// NULL or 0 that might allow certain optimizations.
 #[lang="non_zero"]
 #[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Show)]
-#[unstable(feature = "unnamed_feature")]
+#[unstable(feature = "core")]
 pub struct NonZero<T: Zeroable>(T);
 
 impl<T: Zeroable> NonZero<T> {